forked from openlp/openlp
387 lines
13 KiB
Python
387 lines
13 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
|
|
|
|
###############################################################################
|
|
# OpenLP - Open Source Lyrics Projection #
|
|
# --------------------------------------------------------------------------- #
|
|
# Copyright (c) 2008-2017 OpenLP Developers #
|
|
# --------------------------------------------------------------------------- #
|
|
# This program is free software; you can redistribute it and/or modify it #
|
|
# under the terms of the GNU General Public License as published by the Free #
|
|
# Software Foundation; version 2 of the License. #
|
|
# #
|
|
# This program is distributed in the hope that it will be useful, but WITHOUT #
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
|
|
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
|
|
# more details. #
|
|
# #
|
|
# You should have received a copy of the GNU General Public License along #
|
|
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
|
|
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
|
|
###############################################################################
|
|
"""
|
|
Provide the generic plugin functionality for OpenLP plugins.
|
|
"""
|
|
import logging
|
|
|
|
|
|
from PyQt5 import QtCore
|
|
|
|
from openlp.core.common import Registry, RegistryProperties, Settings, UiStrings
|
|
from openlp.core.utils import get_application_version
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class PluginStatus(object):
|
|
"""
|
|
Defines the status of the plugin
|
|
"""
|
|
Active = 1
|
|
Inactive = 0
|
|
Disabled = -1
|
|
|
|
|
|
class StringContent(object):
|
|
"""
|
|
Provide standard strings for objects to use.
|
|
"""
|
|
Name = 'name'
|
|
Import = 'import'
|
|
Load = 'load'
|
|
New = 'new'
|
|
Edit = 'edit'
|
|
Delete = 'delete'
|
|
Preview = 'preview'
|
|
Live = 'live'
|
|
Service = 'service'
|
|
VisibleName = 'visible_name'
|
|
|
|
|
|
class Plugin(QtCore.QObject, RegistryProperties):
|
|
"""
|
|
Base class for openlp plugins to inherit from.
|
|
|
|
**Basic Attributes**
|
|
|
|
``name``
|
|
The name that should appear in the plugins list.
|
|
|
|
``version``
|
|
The version number of this iteration of the plugin.
|
|
|
|
``settings_section``
|
|
The namespace to store settings for the plugin.
|
|
|
|
``icon``
|
|
An instance of QIcon, which holds an icon for this plugin.
|
|
|
|
``log``
|
|
A log object used to log debugging messages. This is pre-instantiated.
|
|
|
|
``weight``
|
|
A numerical value used to order the plugins.
|
|
|
|
**Hook Functions**
|
|
|
|
``check_pre_conditions()``
|
|
Provides the Plugin with a handle to check if it can be loaded.
|
|
|
|
``create_media_manager_item()``
|
|
Creates a new instance of MediaManagerItem to be used in the Media
|
|
Manager.
|
|
|
|
``add_import_menu_item(import_menu)``
|
|
Add an item to the Import menu.
|
|
|
|
``add_export_menu_item(export_menu)``
|
|
Add an item to the Export menu.
|
|
|
|
``create_settings_tab()``
|
|
Creates a new instance of SettingsTabItem to be used in the Settings
|
|
dialog.
|
|
|
|
``add_to_menu(menubar)``
|
|
A method to add a menu item to anywhere in the menu, given the menu bar.
|
|
|
|
``handle_event(event)``
|
|
A method use to handle events, given an Event object.
|
|
|
|
``about()``
|
|
Used in the plugin manager, when a person clicks on the 'About' button.
|
|
|
|
"""
|
|
log.info('loaded')
|
|
|
|
def __init__(self, name, default_settings, media_item_class=None, settings_tab_class=None, version=None):
|
|
"""
|
|
This is the constructor for the plugin object. This provides an easy way for descendant plugins to populate
|
|
common data. This method *must*
|
|
|
|
be overridden, like so::
|
|
|
|
class MyPlugin(Plugin):
|
|
def __init__(self):
|
|
super(MyPlugin, self).__init__('MyPlugin', version='0.1')
|
|
|
|
:param name: Defaults to *None*. The name of the plugin.
|
|
:param default_settings: A dict containing the plugin's settings. The value to each key is the default value
|
|
to be used.
|
|
:param media_item_class: The class name of the plugin's media item.
|
|
:param settings_tab_class: The class name of the plugin's settings tab.
|
|
:param version: Defaults to *None*, which means that the same version number is used as OpenLP's version number.
|
|
"""
|
|
log.debug('Plugin %s initialised' % name)
|
|
super(Plugin, self).__init__()
|
|
self.name = name
|
|
self.text_strings = {}
|
|
self.set_plugin_text_strings()
|
|
self.name_strings = self.text_strings[StringContent.Name]
|
|
if version:
|
|
self.version = version
|
|
else:
|
|
self.version = get_application_version()['version']
|
|
self.settings_section = self.name
|
|
self.icon = None
|
|
self.media_item_class = media_item_class
|
|
self.settings_tab_class = settings_tab_class
|
|
self.settings_tab = None
|
|
self.media_item = None
|
|
self.weight = 0
|
|
self.status = PluginStatus.Inactive
|
|
# Add the default status to the default settings.
|
|
default_settings[name + '/status'] = PluginStatus.Inactive
|
|
default_settings[name + '/last directory'] = ''
|
|
# Append a setting for files in the mediamanager (note not all plugins
|
|
# which have a mediamanager need this).
|
|
if media_item_class is not None:
|
|
default_settings['%s/%s files' % (name, name)] = []
|
|
# Add settings to the dict of all settings.
|
|
Settings.extend_default_settings(default_settings)
|
|
Registry().register_function('%s_add_service_item' % self.name, self.process_add_service_event)
|
|
Registry().register_function('%s_config_updated' % self.name, self.config_update)
|
|
|
|
def check_pre_conditions(self):
|
|
"""
|
|
Provides the Plugin with a handle to check if it can be loaded.
|
|
Failing Preconditions does not stop a settings Tab being created
|
|
|
|
Returns ``True`` or ``False``.
|
|
"""
|
|
return True
|
|
|
|
def set_status(self):
|
|
"""
|
|
Sets the status of the plugin
|
|
"""
|
|
self.status = Settings().value(self.settings_section + '/status')
|
|
|
|
def toggle_status(self, new_status):
|
|
"""
|
|
Changes the status of the plugin and remembers it
|
|
"""
|
|
self.status = new_status
|
|
Settings().setValue(self.settings_section + '/status', self.status)
|
|
if new_status == PluginStatus.Active:
|
|
self.initialise()
|
|
elif new_status == PluginStatus.Inactive:
|
|
self.finalise()
|
|
|
|
def is_active(self):
|
|
"""
|
|
Indicates if the plugin is active
|
|
|
|
Returns True or False.
|
|
"""
|
|
return self.status == PluginStatus.Active
|
|
|
|
def create_media_manager_item(self):
|
|
"""
|
|
Construct a MediaManagerItem object with all the buttons and things
|
|
you need, and return it for integration into OpenLP.
|
|
"""
|
|
if self.media_item_class:
|
|
self.media_item = self.media_item_class(self.main_window.media_dock_manager.media_dock, self)
|
|
|
|
def upgrade_settings(self, settings):
|
|
"""
|
|
Upgrade the settings of this plugin.
|
|
|
|
:param settings: The Settings object containing the old settings.
|
|
"""
|
|
pass
|
|
|
|
def add_import_menu_item(self, import_menu):
|
|
"""
|
|
Create a menu item and add it to the "Import" menu.
|
|
|
|
:param import_menu: The Import menu.
|
|
"""
|
|
pass
|
|
|
|
def add_export_menu_item(self, export_menu):
|
|
"""
|
|
Create a menu item and add it to the "Export" menu.
|
|
|
|
:param export_menu: The Export menu
|
|
"""
|
|
pass
|
|
|
|
def add_tools_menu_item(self, tools_menu):
|
|
"""
|
|
Create a menu item and add it to the "Tools" menu.
|
|
|
|
:param tools_menu: The Tools menu
|
|
"""
|
|
pass
|
|
|
|
def create_settings_tab(self, parent):
|
|
"""
|
|
Create a tab for the settings window to display the configurable options
|
|
for this plugin to the user.
|
|
"""
|
|
if self.settings_tab_class:
|
|
self.settings_tab = self.settings_tab_class(parent, self.name,
|
|
self.get_string(StringContent.VisibleName)['title'],
|
|
self.icon_path)
|
|
|
|
def add_to_menu(self, menubar):
|
|
"""
|
|
Add menu items to the menu, given the menubar.
|
|
|
|
:param menubar: The application's menu bar.
|
|
"""
|
|
pass
|
|
|
|
def process_add_service_event(self, replace=False):
|
|
"""
|
|
Generic Drag and drop handler triggered from service_manager.
|
|
"""
|
|
log.debug('process_add_service_event event called for plugin %s' % self.name)
|
|
if replace:
|
|
self.media_item.on_add_edit_click()
|
|
else:
|
|
self.media_item.on_add_click()
|
|
|
|
@staticmethod
|
|
def about():
|
|
"""
|
|
Show a dialog when the user clicks on the 'About' button in the plugin manager.
|
|
"""
|
|
raise NotImplementedError('Plugin.about needs to be defined by the plugin')
|
|
|
|
def initialise(self):
|
|
"""
|
|
Called by the plugin Manager to initialise anything it needs.
|
|
"""
|
|
if self.media_item:
|
|
self.media_item.initialise()
|
|
self.main_window.media_dock_manager.add_item_to_dock(self.media_item)
|
|
|
|
def finalise(self):
|
|
"""
|
|
Called by the plugin Manager to cleanup things.
|
|
"""
|
|
if self.media_item:
|
|
self.main_window.media_dock_manager.remove_dock(self.media_item)
|
|
|
|
def app_startup(self):
|
|
"""
|
|
Perform tasks on application startup
|
|
"""
|
|
pass
|
|
|
|
def uses_theme(self, theme):
|
|
"""
|
|
Called to find out if a plugin is currently using a theme.
|
|
|
|
Returns True if the theme is being used, otherwise returns False.
|
|
"""
|
|
return False
|
|
|
|
def rename_theme(self, old_theme, new_theme):
|
|
"""
|
|
Renames a theme a plugin is using making the plugin use the new name.
|
|
|
|
:param old_theme: The name of the theme the plugin should stop using.
|
|
:param new_theme: The new name the plugin should now use
|
|
"""
|
|
pass
|
|
|
|
def get_string(self, name):
|
|
"""
|
|
Encapsulate access of plugins translated text strings
|
|
"""
|
|
return self.text_strings[name]
|
|
|
|
def set_plugin_ui_text_strings(self, tooltips):
|
|
"""
|
|
Called to define all translatable texts of the plugin
|
|
|
|
:param tooltips:
|
|
"""
|
|
# Load Action
|
|
self.__set_name_text_string(StringContent.Load, UiStrings().Load, tooltips['load'])
|
|
# Import Action
|
|
self.__set_name_text_string(StringContent.Import, UiStrings().Import, tooltips['import'])
|
|
# New Action
|
|
self.__set_name_text_string(StringContent.New, UiStrings().Add, tooltips['new'])
|
|
# Edit Action
|
|
self.__set_name_text_string(StringContent.Edit, UiStrings().Edit, tooltips['edit'])
|
|
# Delete Action
|
|
self.__set_name_text_string(StringContent.Delete, UiStrings().Delete, tooltips['delete'])
|
|
# Preview Action
|
|
self.__set_name_text_string(StringContent.Preview, UiStrings().Preview, tooltips['preview'])
|
|
# Send Live Action
|
|
self.__set_name_text_string(StringContent.Live, UiStrings().Live, tooltips['live'])
|
|
# Add to Service Action
|
|
self.__set_name_text_string(StringContent.Service, UiStrings().Service, tooltips['service'])
|
|
|
|
def __set_name_text_string(self, name, title, tooltip):
|
|
"""
|
|
Utility method for creating a plugin's text_strings. This method makes use of the singular name of the
|
|
plugin object so must only be called after this has been set.
|
|
"""
|
|
self.text_strings[name] = {'title': title, 'tooltip': tooltip}
|
|
|
|
def get_display_css(self):
|
|
"""
|
|
Add css style sheets to htmlbuilder.
|
|
"""
|
|
return ''
|
|
|
|
def get_display_javascript(self):
|
|
"""
|
|
Add javascript functions to htmlbuilder.
|
|
"""
|
|
return ''
|
|
|
|
def refresh_css(self, frame):
|
|
"""
|
|
Allow plugins to refresh javascript on displayed screen.
|
|
|
|
``frame``
|
|
The Web frame holding the page.
|
|
"""
|
|
return ''
|
|
|
|
def get_display_html(self):
|
|
"""
|
|
Add html code to htmlbuilder.
|
|
"""
|
|
return ''
|
|
|
|
def config_update(self):
|
|
"""
|
|
Called when Config is changed to restart values dependent on configuration.
|
|
"""
|
|
log.info('config update processed')
|
|
if self.media_item:
|
|
self.media_item.config_update()
|
|
|
|
def new_service_created(self):
|
|
"""
|
|
The plugin's needs to handle a new song creation
|
|
"""
|
|
pass
|